How does identity and access management (IAM) contribute to network security?

• A. By closing unused ports on the firewall
• B. By ensuring only authorized users access resources
• C. By monitoring bandwidth usage
• D. By reducing the number of network devices

Answer: (B)

Identity and access management (IAM) plays a crucial role in network security by ensuring that only authorized users can access specific resources within a network. This process involves authenticating the identities of users and granting permissions based on their roles, which helps mitigate the risk of unauthorized access and potential data breaches. By implementing IAM, organizations can enforce security policies that dictate who has access to various resources and what actions they can perform, contributing to the overall integrity and confidentiality of sensitive information.

While the other choices relate to network management and security in a broader sense, they do not specifically address the core function of IAM. Closing unused ports on a firewall, monitoring bandwidth usage, and reducing the number of network devices, while beneficial practices, do not primarily focus on the identity verification and access authorization aspects that are fundamental to IAM. Thus, the emphasis on authorized user access encapsulates the essence of IAM's contribution to robust network security.